不同PH调节剂制备四氧化三锰的性能研究  

Study on the properties of manganese trioxide prepared by different PH regulators

作　　者：付德进 王家伟[1,2] 王海峰 勾碧波[1,2] 李明东 FU Dejin;WANG Jiawei;WANG Haifeng;GOU Bibo;LI Mingdong(School of Materials and Metallurgy,Guizhou University,Guiyang 550025,China;Key Laboratory of Metallurgical Engineering and Process Energy Conservation,Guiyang 550025,China)

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550025 [2]贵州省冶金工程与过程节能重点实验室,贵州贵阳550025

出　　处：《粉末冶金工业》2023年第2期12-16,共5页Powder Metallurgy Industry

基　　金：国家自然科学基金资助项目(51764006,51864012);贵州省科学合作计划资助项目([2017]5788,[2019]1411)。

摘　　要：以硫酸锰为原料、氧气为氧化剂制备四氧化三锰,研究不同PH调节剂(氢氧化钠、氨水和复配添加剂)对产物物相组成、微观形貌和比表面积的影响。结果表明:以氢氧化钠和氨水为PH调节剂制备四氧化三锰分别会引入钠离子复合物(Na_(2)Mn_(3)O_(7))、锰氨复合物[(NH_(4))Mn_(8)O_(16)],锰含量较低,产物纯度差。以复配添加剂为PH调节剂制备的四氧化三锰结晶度好,无其他杂峰生成,不会引入其他杂质离子,微观形貌呈类球形颗粒,颗粒分布均匀,粒径约为120 nm,孔隙小,比表面积为10.15 m^(2)/g,滞后环类型为H_(3),孔结构丰富。Manganese trioxide was prepared with manganese sulfate as raw material and oxygen as oxidant.The effects of different PH regulators(sodium hydroxide,ammonia and compound additives)on the phase composition,microstructure and specific surface area of the product were studied.The results show that sodium impurity(Na_(2)Mn_(3)O_(7))and manganese ammonia complex[(NH_(4))Mn_(8)O_(16)]are introduced into the preparation of Mn_(3)O_(4) with sodium hydroxide and ammonia as PH regulator,respectively.The content of manganese was low and the purity of the product was poor.Manganese trioxide prepared with compound additives as PH regulator has good crystallinity,no other peaks are generated and no introduction of other impurity ions.Micromorphology is spherical particles,particle size is about 120 nm,pore is small,specific surface area is 10.15 m^(2)/g,hysteresis loop type is H_(3),pore structure is rich.

关 键 词：硫酸锰 氧气 PH调节剂 四氧化三锰 

分 类 号：TQ137.12[化学工程—无机化工] TM912[电气工程—电力电子与电力传动]